. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. CHARACTERISTIC DEEP-SEA TYPES. CRUSTACEA. 51 uncommon West Indian type from the globigerina ooze: it be- longs to the group having no peduncle. As has been noticed by Hoek, the presence of Scalpellum and Verruca in the great depths of the ocean coincides in a strik- ing manner with
. A contribution to American thalassography : Three cruises of the United States Coast and geodetic survey steamer "Blake", in the gulf of Mexico, in the Caribbean sea, and along the Atlantic coast of the United States, from 1877 to 1880. Blake (Steamer); Marine animals -- Atlantic Ocean; Marine sediments. CHARACTERISTIC DEEP-SEA TYPES. CRUSTACEA. 51 uncommon West Indian type from the globigerina ooze: it be- longs to the group having no peduncle. As has been noticed by Hoek, the presence of Scalpellum and Verruca in the great depths of the ocean coincides in a strik- ing manner with the palseontological history of these genera. They are found in the secondary deposits, yet the genus Pol- licipes, another of the pedunculated cirripeds, dating back to the oolite, is only a littoral genus in our seas. The ostracods are minute crustaceans, the dead tests of which occur in nearly all the bottom deposits. They are very abundant fossils, but the deep-sea dredgings have not as yet revealed any type of im- portance. Many of the ostracods (Fig. 259) are pelagic; only a compara- tively small num- ber live at any considerable depth moderate Fig. 259. — Cypris. Greatly magnified. they are denizens of shallow water or of. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Agassiz, Alexander, 1835-1910; U. S. Coast and Geodetic Survey. Boston ; New York : Houghton, Mifflin and Co.
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Keywords: ., bookauthoruscoasta, bookcentury1800, bookdecade1880, bookyear1888
